Philip_g

after a fresh rebuild my coolant isn't working, is the coolant temp sensor on an S4 T2 on top of the water pump?
some people mentioned a sending unit below the oil pressure unit, but I couldn't tell if these were S4's or S5's and different from what I thought mine was.

Can I ground the wire I think is the temp wire and see if the gauge is working? Or is there a wire below the oil filter I'm missing?

RETed

Gauge sensor is right under oil filter, irregardless of year.
Plug the wire back in.



-Ted

Philip_g

Thanks Ted.
Always appreciate your advice

any ideas what this one wire sensor is to the right of the stat housing? Is it for coolant level? I had assumed it was temp and the level sensor was at the bottom of the rad.

igottafc

iTrader: (6)

on both s4's and s5's, the temp sending unit are in the same locations. The s4's have a smaller diameter i beleive. Take your sending unit out to see if its cracked, Mine fell into 2 pieces after i took mine out.

Philip_g

I'll check. I don't remember taking it off the housing. Maybe because I didn't know what it was
I'm just happy that the car is running. kinda.